Toy crane or derrick.



T a. ARDEN. TOY CRANE 0R DERRICK" APPLICATIUN FILED JAN. 15. I918.

Patented 0st. 29, 1918.

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THOMAS RAYMOND ARDEN, OF

GUTTENBERG, NEW JERSEY, ASSIGNOR TO ARDEN MANUFACTURING CORPORATION, OFGUTTENBERG, NEW JERSEY, A CORPORA- TION OF NEW YORK.

TOY CRANE OR DERRICK.

Application filed January 16, 19 18.

To all whom it may concern:

Be it known that I, THOMAS RAYMOND ARDEN, a citizen of the United Statesof America, residing, at Guttenberg, in the county of Hudson, State ofNew Jersey, have invented, certain new and useful Improvements in ToyCranes 0r Derricks, of which the following is a specification.

My invention relates to a toy crane or derrick, in which the movement ofthe boom is automatically effected and controlled.

The principal object of the invention is to provide a simply constructedtoy, enabling a child to readily perceive the mechanical principlesinvolved in the construction and operation of cranes and derricks.

A preferred embodiment of the invention is illustrated in theaccompanying drawing, in which Figure 1 is a side elevational view,partly in section, of my improved crane or derrick;

' Fig. 2 is a horizontal sectional view on the line 22 of Fig. 1; V

Fig. 3 is a vertical sectional view on the line 33 of Fig. 2; and

Fig. 4 is a perspective view of the boom.

The derrick is supported upon a frame which consists of the members 10and 11, held together in crossed relation by the bolt or pin 12, throughthe bottom of which the cotter pin 13 may be inserted.

Swiveled to the supporting frame by the pin 12 is the derrick platform,which comprises the base 14 and the side walls 15. Interposed betweenthe platform and the upper member of the supporting frame 10'11 is awasher 16 into a groove of which sets a collar 17 formed on the pin 12intermediate its ends.

Extending upwardly from the platform is a mast, which preferablycomprises uprights 18, four in number, arranged in pairs at oppositesides of the side walls 15, and converging toward the top where they aresecured together by means of a plate or block 19. At an intermediatepoint the uprights which constitute the mast are braced and held inproperly spaced relation by an additional block 20, having a centralopening 21.

Pivotally supported near the front end of the platform is a swingingboom which is constructed somewhat like the mast and comprises four rods22, which converge toward Specification of Letters Patent. i

r Patented Oct. 29, 1918. Serial no. 212,002.

form is a shaft 28 upon which is mounted a cable drum 29, adjacentthereto a toothed disk or sprocket wheel 30, and adjacent to the lattera winding pulley 31. Carried by the block 19 is a sheave 32 over whichis rove a cable 33 one end of which is attached to an eye 34 in theblock 27 at the top of the boom, and the other end of which cable isattached to the drum 29. The cable 33 is sufliciently long to be woundabout the drum 29 a number of times when the boom is upright.

Suspended from a hook 35 in the block 19 is one end of a coiledretractile spring 36, the other end of which is secured to a rope orcable 37 adapted to be wound on the pulley 31. The rope 37 passesthrough theopening 21 in. the block 20. The cables 33 and 37 arereversely wound on the drum 29 and pulley 31 respectively, that is, whenthe cable 33 ispaid out. the cable 37 is wound on the pulley 31,and whenthe cable 33 is wound on the drum 29 the cable 37 is unwound from thepulley 31. The shaft 28 is extended to form the crank or operatinghandle 38, and the mast is provided with a stop 39 to prevent impact ofthe boom against the mast.

I provide a suitable governor mechanism for controlling the ascent ofthe boom, and as shown in the drawing, this preferably consists of aform ofescapement which includes a rectangular horizontal frame 40mounted to oscillate in the sidewalls 15 of the platform. The frame 40is extended to form the substantially vertical arm 41, having a ball 42at its top, and provided with the weighted sleeve 43 slidable on the arm41. The upward movement of the governor sleeve 43 is limited by the ball42 and its downward movementis limited by the arm 41 which is about onehalf as long as the arm 41. The frame 40 is so positioned with relationto the toothed disk 30, that as the former oscillates its sides willalternately engage the teeth of the disk during rotation of the latter.

Pivotally mounted in the side walls of the platform, toward its rearend, is a brake which comprises the yoke 4a adapted to engage the teethof the disk 30, and a rearwardly extending handle 45 by means of whichthe brake may be operated. The weight of the handle 45 is greater thanthat of the yoke 44, so that the latter has a normal tendency to engagethe teeth of the disk 30 and lock the latter against rotation.

Suspended by a link 46 from the eye 3d at the top of the boom, is a loadhook 47 capable of holding a substantially weight.

The operation of the device above described is as follows :-Assuming theparts to occupy substantially the positions shown in Fig. 1, if it bedesired to lower the boom to receive a load on the hook 4:7 the brake44: is moved out of engagement with the sprocket 30 by raising thehandle 45 and the handle 33 is rotated in an anticlockwise direction.The shaft 28 will then be'rotated to wind up the cable 37 on the pulley31 and pay out the cable 33 from the drum 29. As the cable 37 is woundon the pulley 31 the spring 36 is extended and placed under tension. Theescapement 4O oscillates without any appreciable effect on the speed ofthe sprocket 30. When the boom has been lowered the desired distance thebrake 44 l5 is allowed to fall back into engaging position with thesprocket and the load is attached to the hook I7. Thereupon the brake 44is released and the spring 36 will contra-ct, pulling up the cable 37and causing the shaft 28 to rotate in a direction opposite to that inwhich it was first rotated. As the shaft 28 thus rotates the cable 33will be wound up on the drum 29 raising the boom with its load, untileither the boom strikes the stop 39, or the brake is engaged with thesprocket to stop-rotation of the shaft 28. During this rotation of thesprocket 30 the escapement 4O oscillates and if the sprocket speedincreases unduly the sleeve 43 will ride up on the arm 41, reducing thespeed of the sprocket, and acting after the manner of the usual ballgovernor. It will of course be understood that the brake positivelycontrols the operation of the entire device, and if the brake is set theboom can not be moved by the cables.

Copies of this patent may be obtained for What I claim as new and desireto secure by Letters Patent is 1. In a toy crane or derrick, thecombination with a mast, of a swinging boom, a winding drum, a cableextending from'the boom to the drum, a winding pulley, a cable havingone endattached to said pulley, a tension member attached to the otherend of said second cable, and an escapement mechanism for controllingthe speed of movement of said boom.

2. In a toy crane or derrick, the combination with a platform, of a mastsupported thereby, a boom pivotally mounted on said platform, a shaftrotatably supported by said platform, a winding drum, a winding pulleyand a sprocket wheel on said shaft, a cable having one end attached tosaid boom and its other end attached to said drum, a second cable havingone end attached to said pulley, a tension member attached to the otherend of said second cable, and an escapement cooperable with saidsprocket wheel.

3. In a toy crane or derrick, the combination with a platform, of a mastsupported thereby, a boom pivotally mounted on said platform, a shaftrotatably supported by said platform, a winding drum, a winding pulleyand a sprocket wheel on said shaft, a cable having one end attached tosaid boom and its other end attached to said drum, a second cable havingone end attached to said pulley, a tension member attached to the otherend of said second cable, an escapement cooperable with said sprocketwheel, and a brake adapted to be engaged with and disengaged from theteeth of said sprocket wheel. 7

4:. In a toy crane or derrick, the combination with a shaft, of awinding drum and a winding pulley mounted thereon in axial alinement, aswinging boom, a cableconnecting the swinging boom with the windingdrum, a second cable having one end attached to said pulley, and atension member connected to the opposite end of said cable and adaptedwhen, under tension, to rotate the'drum and the'pulley in unison.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

THOMAS RAYMOND ARDEN.

Witnesses:

CLARron FRANoK, BERTHA MUELLER.

five cents each, by addressing the Commissioner of Patents, Washington,D. G.

